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SS 424 14 75 |
IEC |
CENELEC |
Node |
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F1 |
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No demands. Cable spreads fire.
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F2 |
IEC 60332-1 |
EN 60332-1-2 |
Cable is flame retardant. A vertical 600 mm long cable will be burned with 1 kW propane gas burner. Burning time is from 1 minute to 8 minutes, debending cable diameter. |
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F3 |
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Cable is flame retardant. Old swedish testing method, where the cable is installed to a vertical tube. Liquid fuel will be burned below this tube. Testing method is no longer valid. |
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F4 |
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Cables are installed to the vertical bunch in 3,5 m long ladder. The bunch will be burned from the bottom with 20 kW propane gas burner. The fire is not allowed to proceed over 2,5 m high and the cable bunch must be self-extinquishing. F4-class cables are used in places where fire spreading must be stopped. Mostly halogen freedom is supplementary demanding. |
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F4A F/R |
IEC 60332-3-21 |
EN 60332-3-21 |
7 liter/m burning material, flame application time 40 minutes. (Over 35mm2 installation front and rear of the ladder) |
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F4A |
IEC 60332-3-22 |
EN 60332-3-22 |
7 liter/m burning material, flame application time 40 minutes. (Under 35mm2 installation front of the ladder) |
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F4B |
IEC 60332-3-23 |
EN 60332-3-23 |
3,5 liter/m burning material, flame application time 40 minutes. |
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F4C |
IEC 60332-3-24 |
EN 60332-3-24 |
1,5 liter/m burning material, flame application time 20 minutes. |
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F4D |
IEC 60332-3-25 |
EN 60332-3-25 |
0,5 liter/m burning material, flame application time 20 minutes. |
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